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Cardiology Research and Practice
Volume 2015 (2015), Article ID 242686, 7 pages
http://dx.doi.org/10.1155/2015/242686
Research Article

Impact of Coronary Collateral Circulation on In-Hospital Death in Patients with Inferior ST Elevation Myocardial Infarction

1Department of Cardiology, Diyarbakir Gazi Yasargil Training and Research Hospital, 21010 Diyarbakır, Turkey
2Department of Cardiology, Bozok University School of Medicine, Yozgat, Turkey
3Department of Cardiology, Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
4Department of Cardiovascular Surgery, Diyarbakir Gazi Yasargil Training and Research Hospital, Diyarbakır, Turkey
5Department of Cardiology, Ordu State Hospital, Ordu, Turkey

Received 13 October 2015; Revised 5 November 2015; Accepted 8 November 2015

Academic Editor: Frans Leenen

Copyright © 2015 Baris Yaylak et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objectives. Coronary collateral circulation (CCC) may limit the size of right ventricular (RV) infarcts but does not fully explain the relationship between CCC and clinical adverse events in patients with inferior STEMI. In this study, it was aimed to assess the relationship between preintervention angiographic evidence of CCC and clinical outcomes in patients with inferior STEMI who have undergone percutaneous coronary intervention. Methods. A total of 235 inferior STEMI patients who presented within the first 12 hours from the symptom onset were included. CCC to the right coronary artery (RCA) before angioplasty were angiographically assessed, establishing two groups: 147 (63%) patients without CCC and 88 (37%) with CCC according to presence of CCC. Results. RV infarction, complete atrioventricular block, VT/VF, cardiogenic shock, and in-hospital death were noted less frequently in patients with CCC than in those without CCC. Absence of CCC to RCA was found to be the independent predictor for in-hospital death among them (odds ratio 4.0, 95% CI 1.8–12.6; ). Conclusion. Presence of angiographically detectable CCC was associated with better in-hospital outcomes including RV infarction, complete AV block, cardiogenic shock, and VT/VF in patients with inferior STEMI.